They think that we're overlooking some important bit of evidence and they're bringing it to our attention. (IMHO, this is very common, and the "important bit of evidence" generally isn't something that a bright ten-year-old would believe.)

They think that atheism is likely to cause suffering and they'd like to try to prevent that.

They're not 100% happy with their religion and they're checking out the other side to see whether they might fit in here.

No, xtians are told to spread the word of god, to proselytize. Religion is a pyramid scam and just like other pyramid scams, Amway for example, recruiting new suckers is the most important thing.

If there was no recruitment religion would hit a stall point and die, just like amway would die.

it is always about the money. and that's why atheism is so different from religion, it makes knowledge, reality and truth more important than money. we're not working for anyone, directly or indirectly, there's no one driving us to be here, but we want to know the truth so we spend our time debating, learning, honing our view of life to be as close to reality as possible.

Wrong again. You continually get this wrong. I suspect you entirely lack the ability to learn from your mistakes.

r/atheism is not about Christianity. It is largely about people venting their frustration with your pathetically infantile religion, but it is not about your religion proper. The fact of the matter is that most of us live in areas where Christianity is the primary religious affiliation - that we bitch about it is because it is familiar to us. If more of us lived in areas where Muslims or Hindus were the majority, of course we'd be bitching about that instead.

You can't seem to wrap your head around the this simple fact. It isn't rocket science, but you continually fail to understand it.